i.MX ProcessorsのトピックRe: IMX8 PMIC

IMX8 PMIC

gravity_one — Thu, 02 Jan 2020 13:53:39 GMT

hello,

use imx8 ,

How does ‘app’ communicate with SCFW-PMIC，

I want to use ‘app’ to control the PMIC output，

thanks

Re: IMX8 PMIC

igorpadykov — Fri, 03 Jan 2020 02:29:14 GMT

Hi WANG

one can try pmic apis described in sect.12.20.3.1 dynamic_pmic_set_voltage()
System Controller Firmware Porting Guide (sc_fw_port.pdf) included in
SCFW Porting Kit

Best regards
igor
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Re: IMX8 PMIC

gravity_one — Tue, 07 Jan 2020 10:35:54 GMT

hello，

download SCFW Porting Kit,is imx-scfw-porting-kit-1.2.7.1.tar.gz

tar zxvf imx-scfw-porting-kit-1.2.7.1.tar.gz,

but no sc_fw_port.pdf.

Re: IMX8 PMIC

gravity_one — Wed, 08 Jan 2020 08:44:50 GMT

hello，

you provide : This approach is to develop power management in the SCFW phase,

I want to :Now that the kernel has started up and how to management power mode,

BRS

Grayli

Re: IMX8 PMIC

igorpadykov — Wed, 08 Jan 2020 08:54:32 GMT

please check power management chapter in Linux Manual

in Linux 4.19.35_1.1.0 Documentation

Best regards
igor

Re: IMX8 PMIC

gravity_one — Fri, 10 Jan 2020 01:36:33 GMT

hello，

I still don't see what I need，

please mark Which document which page?

i want to：Control or change the output of the LDOn on PMIC after the kernel startup is complete，Change the output voltage；

i only see CMD：echo enabled > /sys/class/tty/ttymxc0/power/wakeup ；

It doesn't meet my requirements；

thanks

BRS

Grayli

Re: IMX8 PMIC

igorpadykov — Fri, 10 Jan 2020 10:07:15 GMT

please refer to regulator_set_voltage() api function on p.66 attached

Linux Manual.

Best regards
igor

Re: IMX8 PMIC

gravity_one — Wed, 15 Jan 2020 06:39:18 GMT

hello,

use regulator_set_voltage() api function ,

The kernel's API needs to use system_call() to support APP operations,rigth?

thanks

BRS

Grayli

Re: IMX8 PMIC

evanlin — Fri, 28 Oct 2022 15:23:40 GMT

hi Grayli,

did you figure out how to call these api functions in kernel?